diff --git a/VERSION b/VERSION
index 7bcd0e3..05b19b1 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-0.0.2
\ No newline at end of file
+0.0.4
\ No newline at end of file
diff --git a/python_terraform/__init__.py b/python_terraform/__init__.py
index fd2ce5b..9abb999 100644
--- a/python_terraform/__init__.py
+++ b/python_terraform/__init__.py
@@ -39,7 +39,7 @@ class Terraform:
     def _gen_param_string(self, kargs):
         params = []
         for key, value in kargs.items():
-            if not value:
+            if value:
                 params += ['-%s=%s' % (key, value)]
             else:
                 params += ['-%s' % key]